Crane.



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GRANB. APPLICATION FILED APLB. 1910.

-Patented July 18,1911.

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CRANE.

Arrnouron FILED n.e. 1910.

998,134, Patented July 18,1911.

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I. F. TAYLOR.| GBANB. APLIOATION FILED APLB. 1910.

998, 1 34.v Patented July 18, 1911.

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v l .Z'mvenoz UNITED STATES PATENT OFFICE.

ISAAC FRANCIS TAYLOR, OF EAST DULWICH, LONDON, ENGLAND.

CRANE.

To all whom it may concern:

Be it known that I, Isaac FRANCIS TAYLOR, a subject of the King of Great Britain and Ireland, residing at 5 Upland road, East Dulwich, London, England, have invented certain new and useful Improvements in Cranes, of which the following is a specification.

This invention relates to cranes more especially applicable to windows, doors, or similar openings, at the upper floors of buildings for raising or lowering articles of furniture or other goods, or to vehicles for loading and unloading the same and comprising when applicable to a window or the like a crane post pivoted at its upper end in a cross bar readily adjustable to openings of different widths, and to walls of different thicknesses, and pivoted at its lower end in a foot plate, also adjustable to sills or walls of different thicknesses, a jib fulcrumed to the crane post and connected at its upper end to a small adjusting barrel in the crane post, and a winch for raising or lowering the load. Heretofore the winch was carried by a rearwardly extending bracket, bolted to the crane post, which by coming in contact with the interior of the wall, limited the horizontal angle through which the crane could be turned on its bearings to swing the jib and load inward toward the window or other opening.

Now this invention has for one of its objects to enable the jib to be swung inward through a much greater angle than before so that goods after being raised can be readily carried by the jib through the window or opening and deposited inside or likewise be lifted inside, swung out and lowered.

A further object of the invention isito enable the cross bar to be readily adjusted and fixed in position in cases where the windows have internal project-ions such as shutters at the sides in such a manner that the crane post can always be vertically mounted.

Specification of Letters Patent.

Application filed April 6, 1910.

Patented July 18, 1911.

Serial No. 553,808.

prevent any of the parts fouling the adjacent walls as the jib is swung inside.

In the accompanying drawings Figures l and 2 are side and rear elevations respectively of a crane, constructed according to this invention, Figs. 3 and l are similar views to Figs. l and 2 showing a slightly modified form of construct-ion.

In the form of the invention shown in Figs. l and 2 the winch barrel a which is made of sheet metal for lightness is mounted in the lower end of a substantially triangular frame b, the converging sides of which are connected by cross stays c c above and below the barrel and are connected by a bolt 02 at the upper end by which the frame is detachably suspended from a hook c3 pivoted to turn horizontally on the top of the crane post CZ. A guide pulley c for the winch rope is also mounted in the top of the frame b.

At the bottom of the frame b are stays f connecting' the frame with a hinge eye or socket f detachably mounted on a pin or pivot f2 vertically above the lower bearing pivot of the crane po-st CZ, so that the winch frame and crane post CZ turn about the same vertical axis.

In order to vary the height of the crane post CZ when desired a detachable extension CZ is arranged to receive the lower end of the post, such extension comprising two up wardly extending arms arranged to receive the post between them, and terminating in a pivot cl2 at the lower end.

Instead of hooking the fixed end of the rope or chain g directly to a shackle on the end of the jib 7L it is passed over a pulley i suspended in an open sided loop j at the end of the jib and secured to a lug, bar or other device at a point 7c lower down on the jib. This arrangement enables the load to be hauled up closer to the top of the jib than hitherto. A guide finger Z is arranged to prevent the rope being accidentally pulled sidewise off the pulley as the jib is swung around.

A barrel m provided with a ratchet and pawl m for adjusting the jib is supported between frame stays m2, ma, its rope or chain m4 passing around pulleys n, a, n2, n3 and being finally attached to the jib. i

In a slightly modified form of construee tion Figs. 3 and 4L the winch frameb is in verted, the winch barrel a being at the upper end and the guide pulley e for the rope g at the lower end. Hinge brackets or stays at the top and a lugv Z22 at the bottom oi' the frame b are detachably mounted on the pivots at the top and bottoni ot the crane post (Z.

llVhat I claim and desire to Secure by Letters Patent is:-

l. A window crane mechanism comprising in combination, a crane post, devices pivotally eupporting` said postv on the window structure to pern'iit the post to swing about vertical aXeS, a jib pivotally mounted on Said poet and provided with a block and tackle for the load7 meana for adjusting the jib with respect to the post, and a winch tramel pivotall)7 mounted on the crane post and provided with a vvinch mechanism connected with the block and tackle for raising` and lowering` the load.

A window crane structure comprieing` in combination, a crane post7 devices pivotally Supporting` said post on the window Structure to permit the poet to Swing` about vertical axes, a jib mounted on said post and provided with a block and tackle 'for the load, and a winch frame pivotally mounted eeegtse on the crane post and provided with a winch mechaiiisin connected with the block and tackle tor raising and lowering the load.

5. A window crane mechanism comprising in combination7 a crane post7 devices pivotall)7 supporting said post on the Window structure, said post having a jib with a block and tackle thereon, a winch trame pivotall7 mounted on axes alining with the pivotal axes of said poet, and a winch on said 'trame for' operatin` said block and tackle.

fle. window crane mechanism coinprieing' in combination, a crane post, devicef.: pivotally mounting` the poet upon the window Structure, a jib for said poet, a` winch trame pivotallj7 mounted on Said post, and means disposed on Said winch trame for adjustinel Said jib.

ln testimony whereof l have atlixed my signature, in presence of two witnessea.

ISAAC FRANCS ll-XYLOR.

W'Titnesses RIPLEY lViLsoN, Hinuxnmr D. JAMESON.

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